Chimney cleaner



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''. G. KOHL CHIMNEY CLEANER 2 Sheets-Sheet 1 Filed Jan. 50. 1922 UHUHUHUHUHUHUHHH gl noauto/L www@ T. G. KOHL.

CHIMNEY CLEANER Patented Nov. 6, 1923?.

'entre stars titane THEODORE G. KOI-IL, 0F IFIAUSAU, WISCONSIN, ASSIGNOR T0 THE ANKO IANUFAC'- TUBING COMPANY, OF WAUSAU, VISCONSIN, A. COR-ORATION OF WISCONSIN.

CHIMNEY CLEANER.

Application led January 30, 1922. Serial No. 532,769.

T 0 all whom it may concern Be it known that I, Tiinononn G. Koni., a citizen of the United States, residing at `Wausau, in the county of Marathon and State or lrWisconsin, have invented `certain new and useful Improvements in Chimney Cleaners, of which the following is a specification.

rIhis invention relates to chimney cleaners and particularly to chimney cleaners of the type described in Letters Patenty No. 1,446,567, which were issued to me on February 27, 1923.

An object of my invention is to provide a chimney cleaner in which the cleaning element is effectively maintained in contact with the chimney wall. A. further objectof the invention is to provide a chimney cleaner having an ethcient form of cleaning element.

These and other objects of my invention are attained in an embodiment; of my invention which is illustrated in the accompanyincr drawings, in whichig. 1 is a sectional elevation through a chimney equipped with the invention, and taken on line 1-1 of Fig. 2;

Fig. 2 is a vertical section at right angles to Fig. 1, and taken on line 2 2 of Fig. 1;

Fig. 3 is a horizontal section taken through the chimney on line 3--3 of Fig. 1; and

Fig. 4 is a fragmentary elevation similar to Fig. 1, and showing the cleaning element in a ditlerent position.

In the drawings 1 indicates a .chimney equipped with the invention, and provided with the customary lining 1, the usual inlets for pipes, only one pipe 2 however being shown, and with the usual soot collecting pan 3.

Between the lowest pipe 2 and the soot pan 3, the chimney is provided with an opening in which a supporting frame 4 is located. A shaft 5 which is loosely journaled inthe frame 4 extends into the chimney and is provided on its outer end with a hand crank 6. Within the frame 4 the shaft 5 has mounted thereon a collar 7 having a rounded face 8, and said collar is provided with a set screw 9 for clamping the same to the shaft 5 to properly position it in the frame 4. rI`he inner end oi' shaft 5 is provided with a yielding bearing 10, which bearing consists of a plurality of turns of heavy steel or other resilient wire. To provide greater resiliency each end ot the wire is formed with coils 11 between the bearing proper and the points of attachment to the frame 4.

Ihe inner end of the shaft 5 has iiXed thereto a sprocket 12 which is located at the center of the chimney. At the upper end of thechimney a rod 13 carries a iianged pulley 14 which is supported above and has substantially the same diameter as the sprocket 12. An endless band or chain 15 passes over the sprocket 12 and pulley 13 and carries a channel member `lfto which the cleaning member is attached. Supporting plates 17 between which the scrapers are clamped are attached to the channel member 16 by means of straps 18 which are bent up from the plates. Astrap 19 which is clamped between the member 16 and the straps 18 extends inwardly to clear the end of rod 13 and is then bent over at right angles and into a plane parallel to the plane of the two falls of the chain 15. The strap 19 is provided with a pivot pin 2O, the axis of which lies in the plane passing through the axes of sprocket 12 and pulley 13. Connected to the pivot 2O is an arm 21 which carries a horizontal eX-v tension 22 at its lower end, and this eXtension or chain guide is provided with openings through which the. falls of the chain 15 pass.

The cleaning element comprises a plurality of scraper plates 23 which are clamped between the plates 17. rIhe outer edges of the plates 23 `are cut at an angle of about 45o to ydivide the plate into a plurality of narrow scraper blades 34. These straight cuts extend inwardly about half way Jfrom the edge of the scraper plate `to supporting plates 17. Curved slots extend backfrom the ends of these straight cut-s to appro-Ximat-ely the edge of the supporting plates 17. This construction provides a plurality of scraper blades each of which is connected to the supporting means at a point oiiset from a line normal to the chimney wall at the point of contact therewith; the outer end of the blade having parallel sides which meet the wall at an angle and the inner end of the blades being of less area, and conse-l quently more lexiblathan the outer end.

As shown in F ig. 3, the device is installed in a square chimney but it is obvious that the device may be used with chimneys havexpansion of the chain.

. @The particular shape of Y makes .the cleaner-very eflicient in the reing cross-sections which are rectangular, circular or oval. Y* p be clearly shown in this view, the top plates 23 have'beenv somewhat shortened, thereby leaving open spaces at opposite sides of the brush but it is obvious that these plates 23 maybe extended toV provide narrowr scraper blades which contact with .a full one-half of the periphery of thechimney wall.

VYWhen installed the length of the chain 15 is so adjusted that the inner'end of the shaft 5 is somewhat highervtlian the outer end, thereby setting up a stressin thel coils 11 of the bearing 10. When the heated products of combustion enter the chimney the chain will expand but the yielding bearing 10 will take up the slaclrproduced by The chain guide 22 elements cooperate to hold the cleaning member normal to the chimney walls since the opposite falls ofthe chain hold the guide 22 horizontal andthe arm 21 vertical. The pivot pin 20 which is carried on the scraper supporting plates is ,thereby held inthe plane of lthe' axes of the sprocket and pulley and prevents tilting of the scraper out of the horizontal.

pulley 13 asshown in Fig. 4, and and `down the other side. s

the scraper blades moval of soot deposits and renders it free from clogging byy soot which isA removed. Due tothe more flexible portion 'at the rear of the blades and to the fact that the ends ofthe blades. are offset from their points of support, a blade will readily tilt about that corner ofthe blade which is nearest ythe support, thereby opening up spaces between the blades through which theloos material may pass. i f It is to be understood that my invention is not limited to the specific embodiment herein described since without departing from the spirit vof my invention, many Vchanges. may be made invarious elements,

and in therelative size, shape and locations of the same.V Y f I claim z- 1. A' flue cleaner comprising rotatable means located centrally 'of'v and near the opposite ends of a flue, an endless band passing over said rotatable means and having two 'substantially parallel strands, means for moving said band, .a cleaningelement attached to said band,fa guide contacting with both strands of said band, and means That the construction lmay e ln casey slack should occur v in4 one or both falls of the cha-in, the guide including a pivot locatedv in` the plane pass- Ving through the axes of said rotatable means for connecting said cleaning element 'and saidguide.

2..,A chimney cleaner comprising a pulley located centrally of a chimney near the upper endthereof, a band supported on said pulley and having two substantially vertical falls depending therefrom, means'for mov- Y v y falls depending therefrom, means forinovand the associated ingsaid band, a cleaning element attached to saidV band, a supporting guide contacting with` said band, Vand means connecting said,

cleaning element and said supporting guide and' permitting said cleaning element to vpass,

over said pulley. y y

1. A chimney cleaner comprising a pulley locatedcentrally'of a chimney near the upper end thereof, al band. supported on said pulley and having two substantially vertical falls depending therefrom, a cleaningele-` ment carried by said band, means `for moving said band, a guide contacting with both falls of said' band and means including a pivot located in the vertical plane passing throughfthe axis of said pulley for Vconnecting said cleaning element and said guide.v

5. A chimney1 cleaner comprising a pulley locatedcentrally of a chimney near the upfperV end` thereof, a band supported on said pulley and'having tw'o substantially vertical falls rdepending therefrom, .means for movingsaid band, a'cleaningelement attached to said band, a guide platein contact with both falls of said band, an upwardly extending arm on said guide plate and' means including a pivotlocated in the vertical plane passing throughthe `airis Vof the saidjpulley for connecting said cleaning said Guide plate. Y

6, f chimney cleaner comprising a pulley locatedcentrally of a chimney near Ythe upvper end thereof, a band supported on'said lll() iio element and i pulley and having two substantially vertical i ing vsaid strapand said guide. I Y i Achimney cleanerV comprising-a pulley v locatedvcentr'ally of and near the top of the chimney, a band' 'supported by said "pulley and having two substantially parallel falls, means for moving said band and a cleaning element carried by said band and having a scraper plate contacting with said chimney walls, the outer edge of said plate being di vided into a plurality or" scraper blades by parallel cuts which extend from and diagonally to the edge of the plate.

8. ln a chimney cleaner, a movable band having parallel falls located in a chimney, a cleaning element carried by said band, said element comprising a plurality ot scraper blades lying substantially in a plane normal to the chimney walls and having parallel side edges disposed diagonally to said walls.

9. ln a chimney cleaner, a metal scraper blade comprising a narrow strip having an outer end face adapted to Contact with a chimney wall, the sides ot said strip adjacent the outer end extending diagonally to the end face and the sides of said strip inwardly of said diagonally extending portions being arcuate.

10. ln a chimney cleaner, a metal scraper blade comprising a narrow strip having an outer end face adapted to contact with a chimney wall, the sides of said strip adjaf cent the outer end being parallel and extending diagonally to the end face and the sides ot said strip inwardly of said parallel portions being arcuate.

ll, In a chimney cleaner7 a iiat scraper blade comprising an inner end portion adapted to be attached toa moving means, an outer portion having an end face adapted to contact with a chimney wall and having parallel sides which extend diagonally to said end tace and an intermediate portion of less cross-sectional area than said outer portion connecting said inner and outer portions.

ln testimony whereof l atliX my signature.

THEODORE G. KOHL. 

